.banner{
    height: 700px;
}
.banner1{
    background: url("../img/banner.jpg");
    background-size:cover;
}
.banner2{
    background: url("../img/banner2.jpg");
    background-size:cover;
}
.banner3{
    background: url("../img/banner3.jpg");
    background-size:cover;
}
.com-1,.com-2,.com-3,.com-4{
    padding-left: 0;
}
.com-1 li,.com-2 li,.com-3 li,.com-4 li{
    list-style: none;
}
.bei{
    width: 100%;
    height: 879px;
    background: url("../img/img-1.png") center center no-repeat;
    background-size:cover;
}
.bei .container .row{
    padding-top: 20px;
}
footer{
    padding-top: 32px;
}
@media (max-width: 600px) {
    .banner{
        height: 300px;
    }
    .banner1{
        background: url("../img/banner.jpg") center center no-repeat;
        background-size:cover;
    }
    .banner2{
        background: url("../img/banner2.jpg") center center no-repeat;
        background-size:cover;
    }
    .banner3{
        background: url("../img/banner3.jpg") center center no-repeat;
        background-size:cover;
    }
    .bei{
        width: 100%;
        height: 100%;
        background: url("../img/img-1.png");
    }
}
